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Kilograms and grams into grams

To convert kilograms and grams into grams, we multiply the number of kilograms by
1000 and add the product to the number of grams.

examples: a. 3 kg 120 g = (3 × 1000 ) g + 120 g = 3000 g + 120 g = 3120 g
b. 9 kg 378 g = (9 × 1000 ) g + 378 g = 9000 g + 378 g = 9378 g

Making equal Weights

Two 500 g-weights weigh 1 kg. Five 100 g-weights weigh 500 g.

2 × 500 g = 1000 g = 1 kg 5 × 100 g = 500 g

Two 250 g-weights weigh 500 g. Five 200 g-weights weigh 1 kg.

2 × 250 g = 500 g 5 × 200 g = 1000 g = 1 kg

Exercise 10B

1. Convert the following kilograms into grams.

a. 4 kg = g b. 6 kg = g

c. 9 kg = g d. 3 kg = g

e. 7 kg = g f. 2 kg = g

2. Convert the following kilograms and grams into grams.

a. 1 kg 200 g = g b. 3 kg 500 g = g

c. 4 kg 800 g = g d. 5 kg 400 g = g

e. 6 kg 800 g = g f. 9 kg 76 g = g

164 Mathematics 3